4TPS:
reference: Structure and Interactions of the Bacillus subtilis Sporulation Inhibitor of DNA Replication, SirA, with Domain I of DnaA., Jameson KH, Rostami N, Fogg MJ, Turkenburg JP, Grahl A, Murray H, Wilkinson AJ, Mol Microbiol. 2014 Jul 11. doi: 10.1111/mmi.12713. PMID: 25041308

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).